In the past, thousands of furnace pills were refined, and although Cao Fan tried his best, he could only get a four-star spirit pill, and he didn't see a shadow of a five-star golden pill at all.

This is also the Dan Realm Simulation Alchemy has infinite spiritual grass to practice, and in the middle, it can save the time loss between the two furnaces of pills during real alchemy, and the most important thing is that there is no need to lose any spiritual power and divine consciousness, and it can continue almost infinitely quickly. Otherwise, after refining so many furnace physical pills, I am afraid that the time alone will take a year and a half.

Cao Fan felt that this was because his understanding of alchemy was not deep enough, and he only refined the lowest-level Guyuan Pill and Qi Gathering Pill, how could he comprehend the supreme realm of the Dan Dao like the Five-Star Golden Pill?

Next, Cao Fan finally stopped being obsessed with refining the pills in the early stage of refining the lower grade, it should be said that he had already refined to the point of vomiting.

The lower-grade mid-stage elixir Cao Fan can be said to be a matter of course, and he was directly refined on the first attempt. Two four-star, four three-star.

Further down is the pursuit of four-star quality and the ultimate alchemy speed.

This time, Cao Fan did not continue to be obsessed with the five-star pill, he refined all the lower-grade mid-stage pills such as Zhuji Dan, Shenyuan Dan, Yuanli Dan, and Yongyan Dan to the point that they were all four-star quality, and then began to impact the lower-grade late-stage pills.

I don't know how long it took, Cao Fan gradually realized in his heart. To refine the five-star golden pill, the heat is very critical, and just relying on his foundation building internal fire is not enough to make the grade of the pill change qualitatively.

He needed to master a powerful flame, only in this way could he make the purification of the spirit grass the most perfect, make the process of condensing the pill the most impeccable, and improve the efficiency of alchemy to the extreme.

But where did he find such a flame now? Even if he could, he didn't know how to submit to the other party for his own use.

Cao Fan stopped simulating alchemy with some discouragement, and if he didn't refine it into a five-star golden pill, he was afraid that he wouldn't be able to pass the Dan Lao level. Not only can't you save people, but you even have to put yourself in it.

In vain, he had a powerful luck and controlled the Taishang Nine Realms, but in the end he was stumped by the flames. Without a sufficiently powerful flame, this five-star golden pill would not be able to be refined at all.

Cao Fan depressedly extended his mind into the Taishang Nine Realms, carefully inspecting every corner of this world, he wanted to see if he could find surprises here.

Suddenly, Cao Fan's spirit suddenly perked up, and he really found what he was looking for in the Taishang Nine Realms.

The reason why the Taishang Nine Realms was able to become a mid-grade three-star true spirit world was precisely because it possessed an extremely precious cosmic source essence, that is, the cosmic source fire.

He is the master of the Supreme Nine Realms, and although the Universe Source Fire is the Universe Essence, it is also under his control here.

He could use a trace of cosmic source fire as his own flame for alchemy, in this case, what kind of fire problem did he worry about? What kind of flame in the world could compare to the cosmic source fire?

When Cao Fan drew out a ray of cosmic source fire, the simulated alchemy system immediately captured this change. Almost instantly, the simulated human formed by his consciousness in the simulated alchemy world also possessed this ray of cosmic source fire.

Cao Fan was really afraid that the simulation alchemy system would not recognize the changes in the flames he possessed, in which case he would be overjoyed.

As soon as the cosmic source fire came out, the purple-gold Dan furnace trembled slightly, as if it was in awe of this powerful flame.

The first time he used the Cosmic Source Fire, Cao Fan couldn't control its power at all, and the spirit grass in the Dan furnace was directly scorched.

Fortunately, the surrounding spirit grass did not need capital at all, and Cao Fan quickly started the refining of the next furnace of Dan, and his mood was not affected.

In the next dozens of furnaces, the spirit grass was either scorched, or the pill that had finally been formed exploded halfway through the condensation, and it was also a headache if the flame was too strong.

I don't know that after refining hundreds of furnaces of pills, Cao Fan finally barely controlled the heat, but the quality of the pill still stayed at four stars, only with a slight golden texture. He knew that as long as the fifth little star did not come out, his five-star golden pill would not be considered a successful refining.

Cao Fan was no longer entangled in whether he could refine the five-star golden pill, but began to impact the low-grade peak pill. This is the level of elixir required by the cultivators of the Dan Formation Period, and the difficulty of refining is much higher.

This time, Cao Fan only used more than 100 furnaces to refine a four-star elixir. After the flame intensity went up, sure enough, his alchemy success rate had been greatly improved.

Unknowingly, Cao Fan had been refining in the Dan Realm for four years. During this period, he didn't know how many 10,000 furnaces of pills he had refined, and the level of the Dan Dao had soared directly, and he had already broken through to the realm of a mid-grade mid-stage alchemy master. At this time, he was already able to refine the four-star Chengying Pill, which was a crucial elixir for the Great Perfection Cultivator to break through the Yuan Infant Realm.

Based on this alone, his Dan Dao level had become second only to Xin Qianyue in the entire Southern Regions.

With the massive improvement of alchemy experience, Cao Fan's control of the cosmic source fire has become more and more handy. The elixir he was refining now was a quasi-five-star grade in every furnace. Each elixir will have a very shallow fifth star pattern next to the four clear star patterns.

It's still a little bit worse.

Cao Fan stopped alchemy, and once again entered a meditative state to review the flaws in the previous alchemy. After a long time, he finally opened his eyes, and there was a hint of enlightenment in his eyes.

This time, Cao Fan refined the most difficult infant tribulation pill in the mid-grade late stage of the pill, which was the most ideal elixir for the monk to cross the Yuan Infant Thunder Tribulation. It can temporarily and greatly increase the monk's lightning resistance, so as to successfully pass the test of lightning tribulation.

Using the Infant Tribulation Pill to impact the five-star Golden Pill, Cao Fan's confidence and courage can be said to have reached the peak. He did not let himself down in this furnace Dan, the whole process was like a cloud of peers, from the control of the heat to the use of the Dan Jue, it can only be described by the word perfect.

The moment he played the trick of harvesting pills, Cao Fan knew that he had succeeded. Even if he hadn't carefully looked at the star patterns on the elixir, he had this confidence.

Six elixirs that shimmered golden light were suspended in the pill furnace, and the five star patterns on the elixir were also conspicuous.

Cao Fan was so excited that he had the urge to look up to the sky and howl, and then he realized that he couldn't open his mouth to speak at all. However, this did not prevent him from striking while the iron was hot and continued to refine another furnace of elixir.

Seizing the subtle feeling of refining success, Cao Fan continued to refine a furnace of five-star infant robbery pills. At this moment, his Dan Dao level had risen to a completely new realm, and looking at the Southern Regions, or even the entire Kunxu Continent, I am afraid that he would not be able to find a second alchemy master who could refine the five-star golden pill.

Cao Fan looked up at Dan Lao, it was time to understand what tests the other party had prepared for him.